Table 1. Hydrogen-bond geometry (, ).
| DHA | DH | HA | D A | DHA |
|---|---|---|---|---|
| O1H1AO2 | 0.82(2) | 1.91(2) | 2.7238(19) | 171(4) |
| O1H1BO3i | 0.81(2) | 1.95(2) | 2.7624(19) | 177(3) |
Symmetry code: (i) 
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